Bead for pneumatic tires.



M. PARIDON.

4 HEAD FOR PNEUMATIC TIRES.

APPLICATION FILED JUNE 19. 1916. 1,200,015, Patented Oct. 3,1916.

I MICHAEL rAninon, or nannnia'rolrjonio, ASSIGNOR or ONE-HALF ro tanner a. RUDD, or BAnBEn'roN, orrro.

' 323M) FOE Punt Mario TIRES. J

for a pneumatic-tireshoe, the strength-giv ing properties of the'latter residing largely in one or more layers composed of a flexible member, such for instance, as a cord.

' More specifically the invention resides in a strengthening core incorporated in the head for holding the cord at the sides of the tire shOeand which is especially useful in the construction of a tire-shoe wherein the shoe is strengthened by a single cord wrapped helically about two cores spaced a art with the two portions of each comp ete convolution arranged at approximately '25 right angles to each other and oblique-to the anchor being so constructed that an approxis looped portion.

longitudinal line of the'shoe, or in otherwords where the strength-giving properties of a tire-shoe reside 1n a single cord, for 1nstance, carried from one head-core obliquely toand around the other bead-core to therev by form a portion of one --layer of the shoe fabric andiwhich is carried from thence across thetrea'd to the first bead core, and at righLangles with respect to the first portion of the cord, and obliquely disposed with re spect to the longitudinal line of the tire-shoe to form a portion'of the second layer.

My invention, therefore, primarily resides in the construction of thereinforcing ement which. is placed in each bead and by which the folded or looped portions of the cord,-at the sides of the tire-shoe, may be securely and accurately anchored to hold each conyolution of, the cord in proper posis tion and in spaced relation with respect to the other convolutions so that all of the conv volutions; will be held against transverse movement or slipping on the bead core. The

mately perfect seat is provided for each With the foregoing and other objects in view, the invention consists in the novel construction, combination I and arrangement of 5.5 parts constituting the invention to be herei Specificationof Letters Eatent.

Patented first, 3,1Q16.

Application filed June 19, 1916. Serial No. 104,561.

inafter specifically described and illustrated in the accompanying drawingsudiich form a part hereofwherein is shown the preferred embodiment of the invention, but it is to be understood that changes, variations and modifications can be resorted to which come within the scope of the matter hereinafter claimed. i

In the drawings in which similar reference numerals indicate like parts in the differentfigures, Figure 1, is a transverse sectional view of a tire-shoe embodying this invention, and Fig. 2, is an enlarged detail of the reinforcement or anchor employed with a few convolutions of a cord fabric in operative engagemei'it therewith.

In the drawings reference numeral 1 de-' notes an ordinary tire-shoe provided with the usual heads 2. The strength-giving properties of the shoe are furnished by one or more layers of a flexible member, such. for instance, as a cord. The construction of both heads is identical and hence a description of one is believed to be sufiicient for both. Positioned in each of the beads is an inelastlc, non-extensible, annularly-fashw' ioned member 3, the 'outer face of which is provided with a helical groove a in. the general forin of a V-thread and between, the grooves 4 arethe usual helical ribs 5. Each reinforcing member 3 maybe in the form of an annulus or endless ringor may-be in the form of a broken ring with ends thereof united,

and in constructing the shoethese'are incorporated in the beads as they are ultimately formed. lhe tire-shoe fabric is preferably constructed from a single strength-giving cord carriedfrom one bead core to the other bead core and from the second bead core to the first bead core, but with the second portion at right angles with respect to the first portion so that the second'portion is superposed on the first portion and at right angles thereto and with both portions oblique to the longitudinal line of-the tire-shoe. v

It is contemplated in this invention that the cord which forms the strength-giving properties of the shoe. will be wound singly about two-equally spacedreinforcing memhere or cores 3 while held in spaced relation and the winding carried out until two comtire-she will be a substantially continuous cord and to illustrate the arrangement of the cord with respect to the reinforcing members 3 it may be assumed that the cord denomi ated by the reference numeral 4: carried from the opposite bead core over the tread of the tire and to, seated in, and pass partially around one of the convolutions of the groove 1 and from thence carried outwardly and to become cord This ('ord will be carried completely around the (ll't'lllll'ftl'GllCQ of the two spaced cores and afte' a complete revolution about them the cord will then be in the position shown by the numeral (3 and pass partially around the reinforcing elen'ient 3 and become cord 7 in the second layer. The portions of the cords denominated by the reference nuinerals 4' and (3 will form the inner layer of the strength-giving fabric of the tire and the layers formed by the cords 5 and 7 form the second or outer layer of the fabric and it will be noted thatrthey cross the layers 4 and 6 at right angles and that both are oblique to the longitudinal line of the reinforcing member The pitch, in-

, 'clination, size configuration or general conformation of the groove +1 in each reinforcmg element may be changed or altered to accou'imodate it to receive the various convolutions of the cord from which the tireshoe fabric is formed and the spiral rib 5 may be round or sharp as desired. By utilizing the reinforcing element 3 provided with a helical groove :4 each successive convolution of cord can be carried over the tread and seated in one of the convolutions of the groove 4 and thence carried outwardly over the tread at right angles with respect to the first portion of the convolution. The various couvolutions of the groove 4 forming eflicient seats and spacing members for holding the looped portions of each convolution of the core accurately in position and the reinforcing member 3 provides a secure and non-yielding anchor for holding the cords from being shifted from their respective positions.

I claim 1. A pneumatic-tire-shoe provided in each bead with a circumferentially-extending annularly-fashioned member, the exterior of each of which is provided with a helical groove constituting a seat to receive the looped portions of a strength-giving cord extending from side to side of the tire-shoe.

2. A pneumatictire-shoe provided in each bead with a circumferentially-extending annularlyfashioned reinforcing member, the outer face of which is provided with a spiral groove constituting a combined seat and spacing medium' for a strength-giving cord extending from side to side of the tireshoe and across the tread thereof to hold the successive convolutions of said cord in spaced relation.

3. A reinforcement for a pneumatictire-shoe bead comprising an annularlyfashioned inextensible member provided with a helical or spiral groove in the outer face thereof.

4. A reinforcement for a pneumatictire-shoe bead comprising an annularlyfashioned member extending circumferentially of said bead and having a spiral groove in the outer face thereof.

5. A reinforcing member for pneumatictire-shoe beads coitprising a ringdike member having the exterior thereof provided with a helically-disposed channel.

(3. A reinforcing member for pneumatictire shoe beads comprising a ring-like member of inextensible material the outer face of which is provided with a spirallyarranged groove of suificient depth to constitute a seat for a cord-like member incorporated as a strength-giving element in said tire-shoe.

In testimony whereof I have hereunto set my hand.

- MICHAEL PARIDON. 

